The 1984 Porsche 956 of Archie Urciuoli is followed by the 1985 Porsche 962 of Bill Hawe. Photo: Walt PietrowiczHamish Somerville navigates the wet weather in his 1976 March 762 F2. Photo: Walt PietrowiczThe 1974 Datsun 240Z of Thomas Fitzgerald leads the 1973 Datsun 240Z of Richard Madia. Photo: Walt PietrowiczThe 1980 BMW M1 of Markus Glarner. Photo: Walt Pietrowicz